Tbilisi - WG3: Digital Radio - Comparative Background paper

Comparative background paper for the Working group 3 on " Digital Radio: a chance, a challenge, a risk? " prepared by Krystyna Kuhn, KRRiT (PL) for the 40th EPRA meeting in Tbilisi, on 8-10 October 2014. Final public version of 18 December 2014.